#!/usr/bin/python

# Program to display primorials.
# Uses the programs "matho-primes" and "./mult".

import os
import sys

args = sys.argv[1:]
if (args == []):
	print "This program calculates large primorials."
	print
	print "Usage:", sys.argv[0], "integers"
	print
	print "Primorials are the product of all primes up to a given number."
	sys.exit(1)
else:
	for arg in args:
		try:
			if (int(arg) < 2):
				print "Number too small."
				sys.exit(1)
		except:
			print "Positive integer required."
			sys.exit(1)
		if (os.system("matho-primes 0 " + arg + "|./mult") != 0):
			sys.exit(1)